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ac/llvm: remove push constants

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These are lowered in NIR.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29675>
This commit is contained in:
Rhys Perry 2024-06-06 12:57:38 +01:00 • committed by Marge Bot
parent edbb75ce3a
commit 38d1456931
1 changed files with 0 additions and 50 deletions
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50
src/amd/llvm/ac_nir_to_llvm.c
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@ -1515,53 +1515,6 @@ static LLVMValueRef build_tex_intrinsic(struct ac_nir_context *ctx, const nir_te
return ac_build_image_opcode(&ctx->ac, args);
}
static LLVMValueRef visit_load_push_constant(struct ac_nir_context *ctx, nir_intrinsic_instr *instr)
{
LLVMValueRef ptr, addr;
LLVMValueRef src0 = get_src(ctx, instr->src[0]);
unsigned index = nir_intrinsic_base(instr);
assert(instr->def.bit_size >= 32);
addr = LLVMConstInt(ctx->ac.i32, index, 0);
addr = LLVMBuildAdd(ctx->ac.builder, addr, src0, "");
/* Load constant values from user SGPRS when possible, otherwise
* fallback to the default path that loads directly from memory.
*/
if (LLVMIsConstant(src0)) {
unsigned count = instr->def.num_components;
unsigned offset = index;
if (instr->def.bit_size == 64)
count *= 2;
offset += LLVMConstIntGetZExtValue(src0);
offset /= 4;
uint64_t mask = BITFIELD64_MASK(count) << offset;
if ((ctx->args->inline_push_const_mask | mask) == ctx->args->inline_push_const_mask &&
offset + count <= (sizeof(ctx->args->inline_push_const_mask) * 8u)) {
LLVMValueRef *const push_constants = alloca(count * sizeof(LLVMValueRef));
unsigned arg_index =
util_bitcount64(ctx->args->inline_push_const_mask & BITFIELD64_MASK(offset));
for (unsigned i = 0; i < count; i++)
push_constants[i] = ac_get_arg(&ctx->ac, ctx->args->inline_push_consts[arg_index++]);
LLVMValueRef res = ac_build_gather_values(&ctx->ac, push_constants, count);
return instr->def.bit_size == 64
? LLVMBuildBitCast(ctx->ac.builder, res, get_def_type(ctx, &instr->def), "")
: res;
}
}
struct ac_llvm_pointer pc = ac_get_ptr_arg(&ctx->ac, ctx->args, ctx->args->push_constants);
ptr = LLVMBuildGEP2(ctx->ac.builder, pc.t, pc.v, &addr, 1, "");
LLVMTypeRef ptr_type = get_def_type(ctx, &instr->def);
ptr = ac_cast_ptr(&ctx->ac, ptr, ptr_type);
return LLVMBuildLoad2(ctx->ac.builder, ptr_type, ptr, "");
}
static LLVMValueRef visit_get_ssbo_size(struct ac_nir_context *ctx,
const nir_intrinsic_instr *instr)
{
@ -3074,9 +3027,6 @@ static bool visit_intrinsic(struct ac_nir_context *ctx, nir_intrinsic_instr *ins
case nir_intrinsic_first_invocation:
result = visit_first_invocation(ctx);
break;
case nir_intrinsic_load_push_constant:
result = visit_load_push_constant(ctx, instr);
break;
case nir_intrinsic_store_ssbo:
visit_store_ssbo(ctx, instr);
break;